What is it?

I made these examples when practicing for interviews. Most of the examples come from Cracking the Coding Interview (5th ed).

What's with this weird syntax?

These examples are written with a Babel transpiler, so they use modern JavaScript syntax. You don't have to the syntax if you'd just like to use my test cases, but understanding the syntax would certainly help!

Why don't you have XYZ problem or concept?

I selected a subset of the problems and concepts that I thought would prepare me best for my own interviews, so this isn't a complete list of all the examples from the book.

Other notes

• There may be mistakes in some of my answers. Not all of the solutions were translated directly from the Java solutions in the book - some I wrote myself without consulting the answers. So be aware that my solutions may be incorrect. The test cases may not cover all the likely errors either.
• I chose to extend base data structure classes with extra functionality for many of the problems. This is of course not a good industry practice, but I found it was the best way to solve these problems with minimal overhead - functional composition would be a bit overkill, and copy-pasting the base classes would be difficult to change. Basically, the higher level design here would be flawed in a bigger project, but it worked fine for practice problems.